text: var _ = require('underscore');
  
  var VALID_TYPE = {
    EMAIL     : {name: "Email", error: "is not a valid email"},
    STRING    : {name: "String", error: "is not a string"},
    DEPENDENT : {name: "Dependent", error: "depencency is also not valid"},
    DATE      : {name: "Date", error: "is not a valid RFC 2822 formatted date"}
  };
  
  function Validation(validType, required, optionalDependent) {
    this.validType = validType;
    this.required = required;
    if (validType === VALID_TYPE.DEPENDENT) {
      if (_.isUndefined(optionalDependent) {
        throw new Error("Missing dependent field");
      } else {
        this.dependent = optionalDependent;
      }
    }
  }
  
  Validation.prototype.isValid = function(first_argument) {
    // body...
  };
  
  module.exports.Validate = Validate;
  